Trolley for electric railways



(No Model.)

111. HV. BLADES. TROLLEY POR ELECTRIC RAILWAYS.

Patented Jan. 20, 1891.

Cy/ISES d www@ f/ QM@ fm2 UNrTEn STATES PATENT OEEicE.

HARRY II. BLADES, OF DETROIT, MICHIGAN.

TRCLLEY FOR ELECTRIC RAILWAYS.

SPECIFICATION forming part of Letters Patent N o. 444,893, dated January20, 1891. Application tiled August ll, 1890- Serial No. 361,676. (Nomodel.)

To all whom it may concern:

Be it known that I, HARRY H. BLADES, a citizen of the United States,residing at Detroit, county of IVayne, State of Michigan, have inventeda certain new and useful Improvement in Trolleys for Electric Railways;and I declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit pertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention is designed to produce au overhead trolley for electricrailways; and it consists in a combination of devices and applianceshereinafter described and claimed.

In the drawings, Figure l is an elevation of a trolley and itssupporting mechanism. Fig. 2 is an elevation at right angles to Fig. l,with the trolley-rod bent over into its position when the trolley is onthe wire.

In carrying out my invention, A represents a suitable base-plate adaptedfor attachmentto the top of the car. .B is the trolley-rod, and C thetrolley journaled in the end thereof and adapted to bear on the wire.The rodB is engage to the plate by the ball-and-socket joint D, thesocket d being formed on the base-plate while the end of the rod isprovided with the ball or knob d. The edges d2 of the socket may, ifdesired, be brought in so as to retain the ball within the socket.

F is a yoke embracing the rod B, to the ends of which are engaged thesprings G G. rlhis yoke is movable up and down on the rod B, and is heldat the desired point by the nuts fj", the rod being screw-threaded toallow the nuts to be raised or lowered.

The lower ends of the springs G G rest on the plate A, the end of thecoil being passed through the plate and securely fastened in anysuitable manner. rlhese springs G G by their lateral resiliency thustend to keep the rod in its upright or vertical position, iieXinglaterally as the rod is thrown over, but exerting all of the time alifting-strain on the outer end, and thus keeping the trolley alwaysagainst the wire. Now when it is desired to increase this lifting-strainthe nut f may be loosened and the nut f run up the desired distance,thus raising' the yoke and extending the springs. Thus to the lateralresiliency of the springsis added the increased tension due to thelongitudinal extension of the springs out of their normal position.

Any desired pressure may thus be exerted to keep the trolley-Wheeladjacent to the wire, and this pressure can be varied at will.

What I claim is- 1. In an overhead trolley for electric railways, thecombination, with the trolley-rod pivoted .at its base to thesupporting-plate, ot' two coil-springs having their lower ends rigidlyengaged to the said supporting-plate and their upper ends engaged to therod above its pivoted end, substantially as described.

2. In an overhead trolley for electric railways, the combination, withthe trolley-rod engaged at its base to the supporting-plate by auniversal joint, of two coil-springs having their lower ends rigidlyengaged to the` said supporting-plate and their upper ends engaged withthe rod, substantially as described.

3. The combination, with the trolley-rod engaged to the supporting-plateby a ball-andsocket joint, of two coil-springs rigidly engaged at theirlower ends to the said supporting-plate and having their upper endsengaged to a cross-arm or yoke on the rods, substantially as described.

4. The combination, with a trolley-rod having an armor-yoke embracingthe same .and adjustable lengthwise of the rod, said rod engaged to itssupporting-plate by a universal joint, of two coil-springs having theirlower ends rigidly engaged to the supporting-plate and their upper endsengaged to the yoke, substantially as described.

5. rlhe combination, with a trolley-rod pivoted to its supporting-plateand having a cross-arm or yoke adjustable lengthwise of the rod, of twocoil-springs having their lower ends rigidly engaged to thesupporting-plate and their upper ends engaged to the yoke, substantiallyas described.

6. The combination, with a trolley-rod having its end engaged to thesupporting-plate by a ball-and-socket joint, and having a crossarrn oryoke adjustable lengthwise of the rod, of two coil-springs rigidlyengaged at their base to the supporting-plate and having their upperends engaged to the yoke, substantially as described.

In testimony whereof I sign this specification in the presence of twoWitnesses.

HARRY II. BLADES.

Witnesses:

W. H. CHAMBEELIN, ADoLrH WURZBURG.

